Nimbus9 · ArcFlow
ArcFlow 65W.
65W, retractable cable built in
A compact 65W power bank with the USB-C cable wound into the body, and a display that shows live voltage, wattage and charging status. Laptops, tablets and phones, at the same time.
- 65W
- Power Delivery output over USB-C
- 10,000mAh
- Battery capacity
- 36Wh
- Rated energy
- About
- 350g
- Weight

The cable
It never left the bank.
The USB-C cable winds into the body. Pull it out to charge, let it wind back when you are done. The cable you need is the one already attached.
Nothing to unspool from the bottom of a bag, nothing to leave behind on a hotel nightstand.
- Retractable USB-C
- Wound into the body
In use
One bank, four things it does.
Filmed with the ArcFlow 65W: the cable coming out, the display reading itself, the ports filling up, and the part people do not expect.
The cable
Pull. Plug. Let go.
The USB-C cable draws out of the body and winds back when you are done, so the thing you charge with is the thing you carry.
The display
Volts, watts, and what is left.
The readout keeps moving while it works. The number tells you where the charge actually stands, not where it stood when you plugged in.
The ports
More than one at a time.
A USB-C that charges in and out, a USB-A that charges out, and the cable that is already attached — a laptop and a tablet going at once.
Into the wall
It refills itself.
Prongs fold out of the body and it plugs straight into an outlet. Nothing else to pack to fill it back up.

Display and ports
It tells you what it is doing.
The display on the front reads out while it works, so a slow charge is something you can see rather than something you suspect.
The built-in cable does the heavy lifting and both ports stay live behind it, so a second device plugs in without waiting its turn. A lanyard loop runs off the corner for the days it rides on the outside of the bag.
- USB-C in and out
- USB-A out
- Lanyard loop
Tech specs
The numbers.
Power
- Capacity
- 10,000 mAh1
- Rated energy
- 36 Wh at 3.6 V1
- Output — USB-C Power Delivery
- 65W
- Output — USB-A
- 30W1
- Input — USB-C
- Up to 30W1
- Input — AC, fold-out prongs
- 110-240 V, 50/60 Hz, 1.5 A1
- Charge time
- Not published
- Charge cycles
- Not published
More than one device at once
- Cable + USB-C
- 65W max1
- Cable + USB-A
- 63W max1
- USB-C + USB-A
- 17W max1
- Cable + USB-C + USB-A
- 60W max1
Ports and display
- Built-in cable
- Retractable USB-C
- USB-C port
- One, charges in and out
- USB-A port
- One, charges out
- Display
- Live voltage, wattage and charging status
- Carry
- Integrated lanyard loop
Size and weight
- Weight
- 350 g1
- Cable length
- 2.3 ft1
- Dimensions
- Not published
- Finish
- Bronze Brown
Power that moves with you.
The cable is already in it, the display tells you what is happening, and there are enough ports to keep a laptop, a tablet and a phone going at once. One finish: Bronze Brown.
1. Figures as printed on the ArcFlow 65W packaging. Weight is stated there as 350 ± 20 g.









